TY - JOUR
T1 - An identity-based signcryption on Lattice without trapdoor
AU - Wang, Xianmin
AU - Zhang, Yu
AU - Gupta, Brij Bhooshan
AU - Zhu, Hongfei
AU - Liu, Dongxi
N1 - Publisher Copyright:
© J.UCS.
PY - 2019
Y1 - 2019
N2 - Identity-based signcryption schemes based on large integer factorization and discrete logarithm problems were considered to be insecure for the quantum computer attack. Thus, choosing a quantum-resist platform and constructing secure schemes based on new hard assumptions are challenges. In this paper, we propose an alternative scheme — an identity-based signcryption on lattice, which does not need to rely on a trapdoor. Meanwhile, our scheme achieves IND-CCA2 and sUF-CMA security, and it is also secure against the current quantum algorithm attacks based on LWE problem for lattice. Furthermore, we demonstrate that the newly proposed scheme has much shorter secret key size, and higher speeds in signcryption and unsigncryption stages, compared with some exiting identity-based signcryption schemes.
AB - Identity-based signcryption schemes based on large integer factorization and discrete logarithm problems were considered to be insecure for the quantum computer attack. Thus, choosing a quantum-resist platform and constructing secure schemes based on new hard assumptions are challenges. In this paper, we propose an alternative scheme — an identity-based signcryption on lattice, which does not need to rely on a trapdoor. Meanwhile, our scheme achieves IND-CCA2 and sUF-CMA security, and it is also secure against the current quantum algorithm attacks based on LWE problem for lattice. Furthermore, we demonstrate that the newly proposed scheme has much shorter secret key size, and higher speeds in signcryption and unsigncryption stages, compared with some exiting identity-based signcryption schemes.
KW - Identity based signcryption
KW - Lattice
KW - Quantum attack
KW - Unforgeability
UR - http://www.scopus.com/inward/record.url?scp=85069916189&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85069916189
SN - 0948-695X
VL - 25
SP - 282
EP - 293
JO - Journal of Universal Computer Science
JF - Journal of Universal Computer Science
IS - 3
ER -